Method for producing a rubber ball having a simulated sewing pattern

Description

FIELD OF THE INVENTION

Engineering and chemical in the part of the method for produce rubber ball looks like sewing pattern.

SUMMARY OF THE INVENTION

The method for produce rubber ball looks like sewing pattern comprising with steps of natural rubber mixed with chemical compounds to produce the ball which has two layers, inner bail or called bladder rubber and outer layer. The outer layer made from pieces of patterned rubber or patch attached onto bladder rubber and combined together by molding machine. Said pieces of rubber can be prepared in desire pattern.

The method according to this invention can produce rubber ball looks like sewing pattern and take less time than prior method. The product has durable quality and proof water.

BRIEF DESCRIPTION OF THE PRIOR ART

The ball production by conventional method is human hand-made. Of course they need the man skill in the art for sewing leather to make the ball. The ball come from this method are uncertain in quality and water can pass through the tiny needle holes. And the ball will downgrade easily

DETAILED DESCRIPTION OF THE INVENTION

The method for produce rubber ball looks like sewing pattern comprising;

• Step of making bladder rubber
• Step of making pieces of rubber or patches for outer layer
• Step of combine patches onto bladder rubber in order to making rubber ball looks like sewing pattern

Step of Making Bladder Rubber (Also Referred to as a Rubber Bladder)

• • 1. Bring the rubber mixed with MASTERBATCH and SBI 1 masticate for 2 minute (as shown in FIG. 1).
  • 2. Bring the rubber from (1) mixing with chemical compound and masticate again for a minute. After that immerse this rubber in starch slurry and dry (as shown in FIG. 2).
  • 3 Bring the rubber from (2) masticate for 1 minute to make it softer then calender by calender machine at temperature 60-90° C. adjust the thickness for 0.95-1.05 mm to make sheet of rubber (as shown in FIG. 3).
  • 4. Bring the rubber sheet from (3) install the air filling tube at position about 9-12 inch from rim (as shown in FIG. 4).
  • 5. Bring rubber sheet from (4) fold and lay on knife block (round shape) to press and cut said folded rubber sheet at temperature 60-100° C. Now the folded rubber sheet is cut in round shape and sealed at the rim form bladder rubber. The weight Is about 130-150 grams (as shown in FIG. 5).
  • 6. Curing the bladder rubber from (5) at temperature 155-165° C. by electric curing machine but for streamer curing machine the pressure should not less than 5.5 Kg/cm and curing time about 3 minutes (as shown in FIG. 6).
  • 7. Bring the bladder rubber from (6) install the air filling tube valve.

Compare the bladder rubber size with template if the size are equal winding the bladder rubber by winding machine. Winding the bladder rubber will support the shape of ball in sphere all the time of use. The appropriate cycle is about 1,200 cycles (as shown in FIG. 7).

Step of Making Pieces of Rubber or Patches for Outer Layer

• • 1. Mix natural rubber and synthetic rubber masticate for 2 minutes then add desired color and further masticate about 5 minutes and mix prepared chemical compound (as shown in FIGS. 8 and 9).
  • 2. Bring the rubber from (1) mix with Sulphur and masticate about 5 minutes then immerse in starch slurry for a moment and then dry in the air. (as shown in FIG. 10)
  • 3. Bring the rubber from (2) masticate or knead for 1 minute until it become softer. Calender rubber by calender machine at temperature 60-90° C. and adjust the thickness of rubber sheet 1.2-1.5 mm (as shown in FIG. 11).
  • 4. Cut rubber sheet from (3) into pieces in desired pattern. Now we will have pieces of rubber or rubber patches for attach onto bladder rubber (as shown in FIG. 12).
    Step of Combine Patches onto Bladder Rubber in Order to Making Rubber Ball Looks Like Sewing Pattern
  • 1. Bring pieces of rubber or patches from the above attach to inside of mold and bring the winded bladder put on the mold and combine together (as shown in FIG. 13).
  • 2. For any brand logo or decoration sticker if need can be attached (as shown in FIG. 14).
  • 3. Bring the ball from (2) curing in the mold specific character; said specific character is the mold has ridge corresponding to the rim of patches or pieces of rubber in order to make groove at the rim of patches or pieces of rubber in to inside the ball. Cause it looks like sewing pattern. Curing the ball for 18 minutes and install small air filling tube and cleaning the ball surface to finish product (as shown in FIGS. 15-17).
    The method for produce rubber ball looks like sewing pattern comprising with steps of natural rubber mixed with chemical compounds to produce the ball which has two layers, inner ball or called bladder rubber and outer layer. The outer layer made from pieces of patterned rubber or patch attached onto bladder rubber and combined together by molding machine. Said pieces of rubber can be prepared in desire pattern.

The method according to this invention can produce rubber ball looks like sewing pattern and take less time than prior method. The product has durable quality and proof water.

	Mixture Compounds	Weight

ASTP ATCH (Mixed at Trap Products Co., Ltd.)

	RSS-1	50 Kilograms
	N-33(?	10 Kilograms
	N-550	17.5 Kilograms
	H-1 6 2 OIL	5 Kilograms
	STFARIC ACID	1 Kilogram
	ANTIOXIDANT SUNTIGHT-S	1 Kilogram
	LT OW	500 Grams
	VOLKANOX MB-2/MG	125 Grams
	TOTAL	85.125 Kilograms
	Rubber weight ± 200 grams

S B-11 (Mixed at Trap Products Co., Ltd.)

	B 3X-2,2255	50 Kilograms
	N-550	10 Kilograms
	N-660	20 Kilograms
	916011,	3.3 Kilograms
	Ca Coz SUPER GRADE	5 Kilograms
	STEARIC ACID	930 Grams
	A-100	860 Grams
	TOTAL	90.09 Kilograms
	Rubber weight ± 200 grams

Inner rubber 30% (Main Machine)

	Mixture Compounds	Weight
	MASTERBATCH	24 Kilograms
	SB 11	9 Kilograms
	ZINC OXIDE 99.5%	500 Grams
	TOTAL	33.5 Kilograms
	PERKACIT TMTM	50 Grams
	ACCEL DM-R (DM)	25 Grams
	SANTOCURE MBS (MOR)	80 Grams
	C URAGE.NT-S	360 Grams
	TOTAL	34.01 Kilograms
	Rubber weight ± 200 grams

List of Machines Preferably Used in Manufacture of Rubber Material

• 1) Machine for mixing of rubber in close type (Internal Mixer)
• 2) Machine for mixing of rubber in open type (Open Mill)—Two Roll Mill
• 3) Machine for calendering rubber (Calender Machine)—Calender
• 4) Machine for folding of inner rubber
• 5) Machine for curing of inner rubber (Curing Mould)